Ionic substances conduct electricity when dissolved in water because the water molecules pull the positive and negative ions apart from each other. This allows the ions to flow around the water freely, which conducts electricity. Water itself does not conduct electricity well, it has to have dissolved ions in it to do so. So if someone drops a plugged in hair dryer in the bath tub, it conducts electricity because they’ve washed a bunch of stuff off of them already that contains ions.
Ionic substances conduct electricity because their physically properties allow them to move freely when dissolved in water. Said another way, when they are dissolved in water ionic substances conduct electricity because the particle’s negative and positive ions are pulled apart. When this happens the ions begin to move in a free flowing motion. That motion naturally lends itself to conducting electricity.
Hope that helps 🙂
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